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Manual generation of events
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import apache_beam as beam | |
from apache_beam.testing.test_stream import TestStream | |
from datetime import datetime | |
import pytz | |
class GenerateEvent(beam.PTransform): | |
@staticmethod | |
def sample_data(): | |
return GenerateEvent() | |
def expand(self, input): | |
return (input | |
| TestStream() | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 1, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 2, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 3, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 4, 0, tzinfo=pytz.UTC).timestamp()) | |
.advance_watermark_to(datetime(2021, 3, 1, 0, 0, 5, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 5, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 6, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 7, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 8, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 9, 0, tzinfo=pytz.UTC).timestamp()) | |
.advance_watermark_to(datetime(2021, 3, 1, 0, 0, 10, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 10, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 11, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 12, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 13, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 14, 0, tzinfo=pytz.UTC).timestamp()) | |
.advance_watermark_to(datetime(2021, 3, 1, 0, 0, 15, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 15, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 16, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 17, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 18, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 19, 0, tzinfo=pytz.UTC).timestamp()) | |
.advance_watermark_to(datetime(2021, 3, 1, 0, 0, 20, 0, tzinfo=pytz.UTC).timestamp()) | |
.add_elements(elements=["event"], event_timestamp=datetime(2021, 3, 1, 0, 0, 20, 0, tzinfo=pytz.UTC).timestamp()) | |
.advance_watermark_to(datetime(2021, 3, 1, 0, 0, 25, 0, tzinfo=pytz.UTC).timestamp()) | |
.advance_watermark_to_infinity()) |
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